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Rescue and clean-up crews search for casualties following the barracks bombing in Beirut on October 23, 1983. If negotiators hope to revive the Iran nuclear deal, they must address the billions of dollars’ worth of civil judgments by US victims of terrorism against Iran. Photo credit: United States Marine Corps. Public domain image.

Rescue and clean-up crews search for casualties following the barracks bombing in Beirut on October 23, 1983. If negotiators hope to revive the Iran nuclear deal, they must address the billions of dollars’ worth of civil judgments by US victims of terrorism against Iran. Photo credit: United States Marine Corps. Public domain image.

US courts say Iran owes terrorism victims billions. That’s an obstacle to a new Iran nuclear deal.

By Christopher A. Bidwell | Nuclear Risk, Nuclear Weapons, Opinion

Illustration of a conceptual spacecraft enabled by nuclear thermal propulsion. Credit: NASA

Illustration of a conceptual spacecraft enabled by nuclear thermal propulsion. Credit: NASA

Is using nuclear materials for space travel dangerous, genius, or a little of both?

By Susan D’Agostino | Analysis, Nuclear Energy, Nuclear Risk, Opinion

Physicist Steven Weinberg, January 28, 2008. Credit: Larry Murphy, The University of Texas at Austin. Used with permission.

Physicist Steven Weinberg, January 28, 2008. Credit: Larry Murphy, The University of Texas at Austin. Used with permission.

Steven Weinberg, Nobel laureate in physics and Bulletin board member, dies at 88

By Susan D’Agostino | Doomsday Clock, Nuclear Risk, Nuclear Weapons, Opinion, Special Topics

AMBER WAVES OF GRAIN. This field of ceramic nose-cones represents, in miniature, all the warheads in the US nuclear arsenal at the height of the Cold War, along with the nuclear submarines, bombers, and ballistic missiles designed to deliver them. Estimates put the warhead count at around 25,000. Denver sculptress Barbara Donachy created this installation to show what such a concentration of nuclear weaponry would look like all in one place. Her display contains 33,561 pieces representing 31,000 warheads, 1,799 ballistic missiles, 324 intercontinental bombers, and 37 nuclear submarines. Amber Waves of Grain installation by Barbara Donachy, Boston Science Museum, Boston, Massachusetts. February 13, 1985. Photograph copyright by Robert Del Tredici, The Atomic Photographers Guild. Used with permission.

AMBER WAVES OF GRAIN. This field of ceramic nose-cones represents, in miniature, all the warheads in the US nuclear arsenal at the height of the Cold War, along with the nuclear submarines, bombers, and ballistic missiles designed to deliver them. Estimates put the warhead count at around 25,000. Denver sculptress Barbara Donachy created this installation to show what such a concentration of nuclear weaponry would look like all in one place. Her display contains 33,561 pieces representing 31,000 warheads, 1,799 ballistic missiles, 324 intercontinental bombers, and 37 nuclear submarines. Amber Waves of Grain installation by Barbara Donachy, Boston Science Museum, Boston, Massachusetts. February 13, 1985. Photograph copyright by Robert Del Tredici, The Atomic Photographers Guild. Used with permission.

Will Canada remain a credible nonproliferation partner?

By Susan O’Donnell, Gordon Edwards | Nuclear Energy, Nuclear Risk, Nuclear Weapons, Opinion

Watch Now—Restricted Data: The History of Nuclear Secrecy

By Halley Posner | Multimedia, Nuclear Risk

Smolny College Commencement, 2019. Smolny College—the first liberal arts program in Russia—was founded as a dual-degree program between Bard College in the United States and St. Petersburg University in Russia. Last month, the Russian State Prosecutor’s Office labeled Bard College “undesirable,” which criminalized Bard’s decades-long partnership with St. Petersburg University. Photo credit: Bard College. Used with permission.

Smolny College Commencement, 2019. Smolny College—the first liberal arts program in Russia—was founded as a dual-degree program between Bard College in the United States and St. Petersburg University in Russia. Last month, the Russian State Prosecutor’s Office labeled Bard College “undesirable,” which criminalized Bard’s decades-long partnership with St. Petersburg University. Photo credit: Bard College. Used with permission.

Why scientists should respond to Russia’s criminalizing of a US educational exchange

By Susan D’Agostino | Interviews, Nuclear Risk, Opinion

SMR research in lab

SMR research in lab

Can small modular reactors help mitigate climate change?

By Arjun Makhijani, M. V. Ramana | Climate Change, Nuclear Energy

UNSCOM’s work to uncover Iraq’s illicit biological weapons program: A primer

By Stephen Black, Henrietta Wilson, Filippa Lentzos | Chemical Weapons, Nuclear Risk, Special Topics

chemical-filled Iraqi mortar shells being scanned for leaks

chemical-filled Iraqi mortar shells being scanned for leaks

The many lessons to be drawn from the search for Iraqi WMD

By Terence Taylor | Chemical Weapons, Nuclear Weapons

A test version of the new B61-12 guided nuclear bomb to be deployed in Europe as part of a modernization program. Photo from a video by Air Force Staff Sgt. Cody Griffith.

A test version of the new B61-12 guided nuclear bomb to be deployed in Europe as part of a modernization program. Photo from a video by Air Force Staff Sgt. Cody Griffith.

Do Germany and the Netherlands want to say goodbye to US nuclear weapons?

By Michal Smetana, Michal Onderco, Tom Etienne | Nuclear Risk, Nuclear Weapons

It’s time to reignite US-Russia cooperation in space. Nuclear power may hold the key

By Stephen Buono, Jake Hecla, Vladimir Kobezskii, Julien de Troullioud de Lanversin, Katie Mummah | Nuclear Energy

Some long-term effects of UNSCOM: People are important, or, therein lies much of the problem

By Charles A. Duelfer | Chemical Weapons, Nuclear Weapons